Bracket 3 and above should aim for at least 50% instant-speed interaction
At the start of the game, this effect forces enemies to commit blockers and push the tempo up
Arena of Glory You can go entire Swiss tournaments without ever activating the haste ability on Arena of Glory, but the opportunity cost is so low that when you do activate it you feel like you're getting away with something
Read More: Dungeons Probably Arent Going To Be Competitive, And Thats Great 5 Sire of Stagnation Now, we know that some people might not expect to see Sire of Stagnation on a list of the best Eldrazi in Commander, but those people would be wrong
Thankfully, looking through the list I'd say that WotC did the best job here
Popular sets are printed in limited runs and split across distributors, who then ration them to stores